Antifriction center-bearing for railway-cars.



ING. l. Patented Feb. l2, |901.

J. E. NURWDDD.

ANTIFRICTIN CENTER BEARING FDR RAILWAY CARS.

(Application led June 8, 1900;)

tricm JGllhl ld. NORVVOOD, OF BALTIMORE, MARYLAND.

hl'l'El-'twdlllltl FOM HAILWAYMCAHS.

SFEGilFCATZEiEFl' 'forming part of Letters Patent No. 667,991, dated February 12, 1901.

Application filed .Tune 8, 1900. `eral No. 19,495. (No model.)

To all whoml '/'t mfr/U concern,.-

Be it known that l, JOHN E. NORWOOD, a citizen of the United States, residing at Baltimore, in the State of tlaryland, have invented certain new and useful Improvements in Antifriction Center- Bearings for RailwaylGars, of which the following is a specification.

illy invention relates to antii'riction centerbearings i'or railway-cars; and its objects are to provide a center antiriction ball-bearing which will be practically dust-proof, so as to exclude sand and cinders and also prevent lateral or side motion oiE the car-body with respect to the truck.

l,Vith these ends in view the invention consists of constructions, arrangements, and coirbinations of the parts hereinafter described and claimed.

Reference is to be had to the accompanying drawings, in which- Figure 1 is an elevation of the truck and body holsters oi' a railway-car with my iniproved bearing shown in section. Fig. 2 is a plan view of the truck-bolster with my improved bearing attached, the upper ball-box being removed. Fig. 3 is a plan view of an annular ball-separator frame and the antifriction-taille held therein. Fig. 4 is an enlarged diametrical section of the complete center-bearingdetached from the bolsters and with the ball-separator frame in place. Fig. 5 is a diainetrical section of the lower ballbox. Fig. is a diainetrical section of the ball-separator frame.

Beter-rin g to the drawings, A designates the truck-bolster, and L 'the body-bolster, oi' a railway-car provided with bearings embodying the features ot' my invention.

rlllie center-bearing comprises a lower ballbox C, secured to the upper face of the truckbolster A at the middle thereof and formed with an annular socket c, in which an annular wear-plate D, made of hardened steel, is seated, said plate being formed with a circular channel (Z, angular in cross-section, as shown, in which the antifriction-balls e roll, the balls having two points of contact, one point being on each eide of the angle. The lower ball-box C has two upwardly-extending annular flanges fj concentric with the circular channel in the wear-plate D. These two flanges torni a circular recess g in the lower ball-box C, which also has a central opening ZL.

F designates an upper ball-box secured to the lower face of the body-bolster B directly above the ball-box C and formed with an annular socket c', in which a hardened-steel annnlar wear-plate G is tted, said wear-plate being formed with an inverted circular channel t', which is angular in cross-section, as shown, and which tits down over the balls e. The lower and upper angular channeled Wearplates thereby form four diametrically opposed points of contact for the balls, which prevent any lateral or side slipping motion. The upper ball-box F also has a cent-ral tubular depending boss j, which receives the connecting-bolt J, in case one is used, and which itself is inserted downwardly through the central opening h in the lower ball-box C. Two concentric annular recesses Z Z are formed on the lower i'ace of the upper ball-box, and the wear-plate G is between the said two recesses. A packing-ring m is in one recess and another packing-ring fm is in the otherA recess. These packing-rings may be made of any suitable material, such as felt. or the like, and each packin grin g abuts against one ol` the upwardly-extending annular flanges f f on the lower ball-box C. These packingrings serve to exclude dirt and dust from the angular channels (Z 't' and balls e.

l may, as shown in Fig. 1i, interpose between the two wear-plates D and G an annular separator-frame N, formed with a plurality of cage-holes o, in which the balls are received and by which the balls are kept separate from each other and always retained in the same relative position.

P designates side bearings located near the ends of the bolslers and provided with antifriction-balls fn.. These may be either used or omitted.

Having thus described my invention, what l claim as new, and desire to secure by Letters Patent, is

1. The combination with the truck and body holsters of a railway-car, of a lower ball-box secured to the truck-bolster and formed with an annular socket; an annular wear-plate seated in said socket and having a circular channel angular in cross-section; antifrictionballs in said channel; an upper ball-box se- IOO eer/,991

flanges t, and an inverted circular channel between said two recesses; a packing-ring in each of said recesses in the upper ballboX- said rings abutting against the upper surfaces of the two upwardly-extending annular flanges on the lower ball-box,and antifrictionballs in said circular channels.

In testimony whereof I affix my signature in the 'presence of two Witnesses.

JOHN E. NORWOOD.

Witnesses:

THos. C. BAILEY, F. S. STITT. 

